From Xojo Documentation
| This class is supported on Mobile (iOS).
Use ＃If...＃Endif with the Target... constants to ensure you only use this class where it is supported.
New in 2016r2
An iOSCustomTableCell is a way to create a group of controls that can be embedded into a table cell. It is a great way to create powerful table layouts.
To use, add a CustomTableCell to your project (drag it from the Library to the Navigator) and then drag the controls you want into it. You can then use it with the iOSTable.CreateCustomCell method in the table's data source RowData method or with the iOSTable.AddRow method.